Combined air conditioning system with solar driven refrigerator and carbon dioxide heat pump

Abstract

The invention discloses a combined air conditioning system with a solar driven refrigerator and a carbon dioxide heat pump in the technical field of solar utilization and air conditioning, which comprises a heat collection system, a heat accumulation system, a domestic hot water supply system, a heat pump air conditioning system and an air conditioning indoor end system, wherein the heat collection system is sequentially connected with the heat accumulation system and the domestic hot water supply system in series; and the heat accumulation system is sequentially connected with the heat pump air conditioning system and the air conditioning indoor end system in series. The combined air conditioning system can realize the comprehensive needs of a building in year-round refrigeration, heating and domestic hot water and balance overall refrigeration and heating capability, has relatively more perfect entire performance and higher performance indexes, adopts environmentally-friendly working mediums, utilizes renewable energy sources and realizes reduction in dependence on primary energy.

Description

technical field [0001] The invention relates to a system in the technical field of solar energy utilization and air conditioning, in particular to a combined air conditioning system of a solar-driven refrigerator and a carbon dioxide heat pump. Background technique [0002] The global shortage of fossil energy and the intensification of the greenhouse effect have brought many negative effects to the environment and social development. The urgent need for high-efficiency energy-saving technologies has promoted the rapid development of solar air-conditioning and air-source heat pump application technologies. Among them, due to the use of natural working fluid, carbon dioxide heat pump has great advantages in environmental protection compared with conventional freon working fluid, and has received more and more attention. In addition, entering the 21st century, building energy consumption accounts for an increasing proportion of national energy consumption, and most of the ener...

AI Technical Summary

Problems solved by technology

However, this patent does not carry out a more targeted design for carbon dioxide working fluid

[0005] The Chinese patent authorization announcement number is: CN2529115Y, and the utility model name is "solar heat pump cooling and heating air conditioner". The patent uses air source heat pump as the main means of cooling, and does not convert the heat of solar energy into cold energy, and assists air source heat pump refrigeration.

However, this patented invention still has several shortcomings compared to the expected product mentioned above - the combined air-conditioning system using solar energy-assisted carbon dioxide heat pumps: First, it has a single purpose, which is only a cooling system, and does not consider the impact on buildings throughout the year. Satisfaction of comprehensive needs; second, the compression refrigeration part does not consider many modifications related to the characteristics of carbon dioxide, for example: the condenser part does not indicate that it is transformed into a gas cooler; third, the absorption refrigeration device and the compression refrigeration device They are two separate devices. Although they are connected by pipelines, the invention patent description or illustrations do not consider the combination of them in the actual product.

Images